Diamond Hill adjusts portfolio with new positions in Humana and Antero, exits First Advantage and Stifel.

Diamond Hill Capital Management updated its portfolio by initiating new positions in Humana, a major Medicare Advantage insurer facing industry challenges, and Antero Resources, a natural gas producer with a positive long-term outlook. They exited holdings in First Advantage due to concerns over macroeconomic exposure and AI disruption, and sold Stifel shares after reaching their intrinsic value estimate. These moves reflect Diamond Hill's strategy to balance growth potential and risk amid changing market conditions.